EP 4102116 A1 20221214 - COLD WATER DRAIN DEVICE
Title (en)
COLD WATER DRAIN DEVICE
Title (de)
KALTWASSERABLAUFVORRICHTUNG
Title (fr)
DISPOSITIF DE PURGE D'EAU FROIDE
Publication
Application
Priority
- JP 2020017716 A 20200205
- JP 2020011964 W 20200318
Abstract (en)
A cold water discharge apparatus, (10) for discharging hot water from an outlet port (D7) when feed water is hot and cold water from a cold water discharge port (D4) when the feed water is cold, includes a temperature-sensitive first switching valve body (14) and a diaphragm-type second switching valve body (17). The first switching valve body (14) is configured to open a cold water discharge flow channel (D3) to discharge the cold water when feed water is cold due to expansion/contraction in response to the change in temperature of the feed water. The second switching valve body (17) is configured to open a discharge flow channel (D6) to discharge the hot water due to the pressure caused by the flow of hot water through the discharge flow channel (D6). The second switching valve body (17) is configured to close the discharge flow channel (D6) to discharge the cold water due to the pressure caused by the flow of the cold water through the cold water discharge flow channel (D3). The second switching valve body (17) is configured to open the discharge flow channel (D6) to discharge residual water from the cold water discharge flow channel (D3) upon being subjected to falling pressure of the downstream residual water of the outlet port (D7) as the cold water discharge flow channel (D3) opens when the residual water within the first switching valve body (14) after stopping water has cooled down.
IPC 8 full level
F16K 11/22 (2006.01); A47K 3/28 (2006.01); F16K 31/70 (2006.01)
CPC (source: EP US)
A47K 3/28 (2013.01 - US); E03B 7/045 (2013.01 - US); E03C 1/0408 (2013.01 - EP US); F16K 11/22 (2013.01 - EP); F16K 31/002 (2013.01 - EP US); E03B 7/045 (2013.01 - EP); E03C 2001/026 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4102116 A1 20221214; EP 4102116 A4 20240306; CN 113498460 A 20211012; CN 113498460 B 20230117; JP 7358358 B2 20231010; JP WO2021157101 A1 20210812; US 11725367 B2 20230815; US 2023151590 A1 20230518; WO 2021157101 A1 20210812
DOCDB simple family (application)
EP 20786224 A 20200318; CN 202080002580 A 20200318; JP 2020011964 W 20200318; JP 2020536701 A 20200318; US 202017052018 A 20200318